Audio output from firefox mixed with microphone

[nikgnomic]

@megavolt

pulseaudio -k will kill the service and load the config

https://archived.forum.manjaro.org/t/no-hdmi-audio/153315/8
suggest you check previous posts about why using pulseaudio -k (or --kill )
is not a good idea

• PulseAudio fails on startup (system with pulseaudio and jack2)
• [Solved] Audio output changes every time screen goes to sleep
• Audio sink for HDMI-audio disappears after screen sleeps
• pulseeffects 4.7.2-1 kills audio and locks PC after updates
• Audio not working on first login of one user

to restart pulseaudio without causing harm to systemd or pulseaudio:

systemctl --user restart pulseaudio